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madam [21]
4 years ago
14

Alba ran 21 miles in three hours what was her average speed

Mathematics
2 answers:
dimaraw [331]4 years ago
4 0

7 miles per hour.  21/3

IgorC [24]4 years ago
3 0

Divide the total amount traveled with the time it took.

21/3 = 7/1

Alba's average speed is 7 miles per hour

hope this helps

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Please help me if you can!
bazaltina [42]

Answer:

<h2>y = 7</h2>

Step-by-step explanation:

We know that the sum of the measures of angles on one side of the parallelogram is 180°.

We have the equation:

(6x - 12) + (132 - x) = 180

6x - 12 + 132 - x = 180               <em>combine like terms</em>

(6x - x) + (-12 + 132) = 180

5x + 120 = 180              <em>subtract 120 from both sides</em>

5x = 60          <em>divide both sides by 5</em>

x = 12

Opposite angles in the parallelogram are congruent.

Therefore:

6y + 18 = 6x - 12

Put the value of x to the equation and solve it for y:

6y + 18 = 6(12) - 12

6y + 18 = 72 - 12

6y + 18 = 60           <em>subtract 18 from both sides</em>

6y = 42          <em>divide both sides by 6</em>

y = 7

7 0
3 years ago
Someone please help ASAP will give brainliest
olga55 [171]

Answer:

the answer is D.

Step-by-step explanation:

7 0
3 years ago
I just ate 1640 calories worth of cookies... kll me
tresset_1 [31]

Answer:

LOL

Step-by-step explanation:

4 0
3 years ago
Find the 50th term of the sequence 5,-2,-9,-16 ,,,
Mademuasel [1]
Common difference is -2-5 = -7
first term is 5

a_50 = 5 -7(50-1) = -338

2) d = 3 - (-7) = 10
 a = -7

a_110 = -7 + 10(110 - 1) = 1083

d = -27 - (-22) = -5

second -7 - 5=  -12
third = -12 - 5 = -17




7 0
3 years ago
Below is a sequence with missing terms. What would the missing terms be if this were an arithmetic sequence?
AnnZ [28]
9, 9(2)=18, 9(3)=27, 9(4)=36 9(5)=45
9,18,27,36,45……..144
Not sure if this is what you are looking for. If the number of blanks is the amount of numbers allowed then the above will not work
9(13)=117, 9(14)=126, 9(15)= 135, 144
If you can only have 3 blanks then the second one could work.
Again, not sure if this is what you need. But hopefully it helps.
8 0
2 years ago
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